Electric soda-fountain



".NO MOGL) 2 Sheets-Sheet 1. W. MITCHELL.

ELECTRIC SODA FOUNTAIN.

110.460,97). Patented Oct. 13,1891.

WW1/*1M onlus rc1-:Rs co., Hoyo-mno.. mmmawn n c (No Model.)I 2 Sheets- Sheet 2.

W. MITCHELL. ELECTRIC SODA FOUNTAIN.

110,460,979. Patented 001:. 13,1891.

UNITED STATES PATENT OFFICE.

IVILLIS MITCHELL, OFMALDEN, ASSIGNCR T() THE BUT"ERFIELD-NIITCHELL ELECTRIC HEATING COMPANY, OF BOSTON, MASSACHUSETTS.

ELECTRIC SODA-FOUNTAIN.

SPECIFICATION forming part of Letters Patent No. 460,979, dated October 13, 1891.

Application filed February 9, 1891. Serial No. 380,802. (No model.)

To all whom t may concern: the successive layers or cylinders of asbestus Beit known that I, WILLIS MITCHELL, a citiby C', the intervening water-spaces by C2, and Zen of the United States, residing at Malden, the wire wound alternately upward and downin the county of Middlesex and State of Masward on the successive layers C by C3. An 5 sachusetts,have invented certain new and iiseinlet-pipe E communicates through branch 55 fullmprovements in Electric Soda-Fountains; pipes e, as shown in Fig. 2, with the said and I do hereby declare the following to be a spaces C' at the closed bottom of said heater. full, clear, and exact description of the iiiven- In like manner, through branch pipes f, the tion, such as will enable others skilled in the said spaces communicate at the closed top of 1o art to which it appertains to makeand use the said heater with outlet-pipe F. The latter 6o same. extends to a hot-water two-way spigot G, The chief object of this invention is to piohaving a valve-plug G', which opens at will v ide convenient, satisfactory, and efficient into the discharge tube of said spigot or means for heating a soda-water fountain by into a bent tube 7L, that extends upwardly I 5 electricity and to adapt the various parts of through the bottom of the water-tank B, open- 65 the fountain to such method of heating. To ing within the same preferably downward. this end I make use of the construction and This wateretank, through an opening b' in its combination of deviceshereinafter described. bottom, communicates with thc open upper My invention consists in them and in certain end of the piimp-cylinder D. A piston J, havzo additional features, all set forth in the aping an aperture J', fits the interior of said 7o pended claims. cylinder and works up and down therein In the accompanying drawings, Figure l when desired. This piston is provided with represents a front elevation of my heater an upwardly-closing valve K, which converts partly broken away. Fig. 2 representsaverthe device into a force-pump. As shown, the 2 5 tical section of the same, the Sirup-jars and valve is loose and has astem K within aper- 75 pump-piston being removed. Fig. 3 rcpreture J', both of these being central with resents a similar view of the entire fountain, spectto the wall of the pump-cylinder. Morethe Sirup-jars being removed. Fig. t repreover, the said valve has aconical upward face sents a detail perspective view of the waterand said piston a valve-seatj in its lower end 3o tank, heater-puinp, and the operating-lever of fitting the same; but I attach no importance 8o the latter with attachments. Fig. 5 repreto these especial features or' form. Any other sents a detail horizontal section of the waterold valve and valve -seat acting similarly tank and Sirup-jars, and Fig. 6 represents a would answer. The tube E extends from the detail vertical section of the two-way cock. lower end of said pump-cylinder D to its A 3 5 A designates the exterior' casing of the foiing branches c. g5 tain; B, a removable water-tank, preferably, lVhen the spigot-plug G' opens communithough not necessarily, of metal and set into cation between the tubes F and h, and the the upper part of said casing, but supported valve K is also open, the hot water from elecr by an annular ledge b of thelatter. An electric heater C circulates through tubes f F,

l 4o tric heating-cylinder C and a pump-cylinder spigot G, tube h, tank l5, pump-cylinder D, 9o

D are suspended from the bottom of said tank, and tubes E c to said heating cylinder C all preferably arranged to be lifted out from again. lVlien said spigot-plug is turned t-o said casing together. To permit this the cap cut on? communication between tubes F and or cover A' of said casing is itself made re- 7L and open it between tube F and the dis- 45 movable. The said electric lieating-cyliiider charge-tube of the spigot, hot water will vflow 95 or heater C is substantially identical in structfrom the lat-ter provided the pressure is snfiiiire with that forming, in part, the siibj ectcient. As this will not generally be the case, matter of my application, Serial No. 373,087, I provide the piston .I with an upwardly-exwhere such a heater is used as a steam-gentending pistonrod L. The upper end of this 5o erator. On the present drawings I indicate Iod is pivoted to the middle part of an arm Ico M, which is hinged on the top edge of the wall of tank B, and extends across the latter from rear to front. A connecting-rod N extends downward from the free forward end of said rod in front of said tank to a treadle-lever O. This is pivoted to one side of said casing within the same and extendstransversely through the opposite side, having a trcadle or handle O on its outer end. Vhen this treadle is pressed down, the same motion is transmitted through the co-nnecting-rod N, hinged arm M, and piston-rod Il to the said piston, and thelatter will be forced down against the water in pump-cylinder D for closing the valve K against valve-seat f, so as to cut off all upward flow of water through aperture J', and will force the hot water out of the upper end of the heater C through pipe F and spigot G, the force and duration of the discharge from said spigot depending on the force and duration of the pressure on said treadle. To allow this action and make the discharge instantaneous, the supply of water must be sutlieient to fill said heater, the pipes E and IF, and the pump-cylinder to the bottom of the piston, and the tank B affords a convenient means of insuring this. Gravity will cause the water to pass from said tank into the upper end of said pump-cylinder when the piston-valve is off its seat, and then, there being no obstruction, to fill the connected parts E C F also. It is necessary only to keep the said tank adequately supplied, and this is best done by occasionally pouring in from above, the cover A first being' removed. A spiral spring P, arranged under the said treadle-lever, replaces the treadle, the piston K, and the connected parts in their first position when the pressure on the said treadle is removed.

The hot-water spigot G of course extends through the easing A. So, too, do the sirupspigots Q, which are preferably arranged on each side of it, as shown, all being together in a row at the front of the fountain. These spigots Q open and close the outlets ref sirupjars R, which are arranged vertically and by preference funnel-shaped, as shown, containing sii-ups of different iiavors, as usual. To make room for these and for the connectinging-rod N, while retaining the greatest possible space for holding water in reserve, the tank B is formed in front with a broad inset or recess B', formed by bending in the wall of said tank, or in any other convenient way. In this recess the said sirup-j ars are arranged vertically side by side, as shown, almost lling it. The said tank extends ont forward on each side of `said recess, forming broad hollow horns B2 in cross-section, which give additional water-space. Of course this tank and the pump, with their connections, might be used in combination with any other electric heater which would allow a flow of water through it; also any other water-forcing device might be substituted for the pump, and the pipe connections and treadle mechanism may be varied at will, the conditions essential to operativeness being retained.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a soda-water fountain, an electric heater, a hot-water spigot, a tube conveying the water to said spigot after being acted on by said heater, and a forcing device for keeping up the iiow of the water while thus being heated and while being discharged by the said spigot, substantially as set forth.

2. In a soda-water fountain, an electric heater adapted to allow the flow of water through it, in combination with a spigot, a tube conveying the hot water from said heater to said spigot, an inlet-pipe supplying said heater, and a forcing device for causing the iiow of water through said inlet-tube, substantially as set forth.

In a soda-water fountain, an electric heater adapted to allow the flow of water -through it, in combination with a tank,tubu

lar connections completing the hydraulic circuit between said tank and heater, a pump for maintaining the flow of waterin said circuit, and a spigot arranged between the said heater and the said tank and adapted to divert the hot water at will from the latter and discharge it, substantially as set forth.

4. In a soda-water fountain, the combination of an electric heater, a tank, a pump supplied by said tank and forcing water toward vsaid heater, a spigot arranged to divert at will the iiow of hot water and discharge it, as stated, and tubular connections maintaining a hydraulic circuit, except when thus diverted, through said pump and said tank, the water being heated by said electric heater on its way from said pump to said tank or spigot, substantially as set forth.

5. In combination with the casing A of a soda water fountain, having a removable cover A and annular ledge a, the water-tank, pump-cylinder, and electric heating-cylinder, all attached and removable together, substantially as described.

G. In a soda-water fountain, the combination ofan electric heater and tubular connections maintaining a hydraulic circuit, a hotwater spigot located in said circuit beyond the outlet end of said electric heater, apninpcylinder located in said circuit before the inlet end of said electric heater, a piston and its valve working in said cylinder as aforcepump, a piston-rod, a pivoted arm to which it is attached, a connecting-rod and treadlelever for operating said arm and piston-rod, and a replacing-spring` for said lever, piston, and attached parts, all substantially as and for the purpose set forth.

In testimony whereof I al'lix my signature in presence of two witnesses.

WILLIS MlflOI-lELL.

XVitiiesses:

PELATIAH R. TRIPP, W. P. CUTLER.

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